Regarding the zoom, it seems to work correctly, since, as you say, it shows 33% and 50%, not 100%, so that the frame fits in each case. Why the percents are different - you have answered the question above - the interface of the 32-bit and 64-bit version is somewhat different hence the percentage difference.

Fine, thanks! Is the 32bit version going to be made more similar to what the 64bit version is now, or vice-versa? It's quite important to me as the differences exists also in the workflow for both (in advanced mode mainly).

NVTeam wrote:Regarding the zoom, it seems to work correctly

Well, I'd say it would work correctly if the displayed full frame occupied the maximum area available in the frame window of the interface (be maximized, at 100% zoom). Currently it's not. But of course this is just a minor cosmetics issue.